On 02/22/11 20:15, Ken Raeburn wrote:
> On Feb 22, 2011, at 07:00, Hans Aberg wrote:
>>>> Perhaps 2.0 should have some check that it gets the right header.
>
> It wouldn't be that tough to do something like:
> #define scm_init_guile scm_init_guile_v2_0 // encode version in symbol
[...]
> and tell people to use the macro. Ugly, maybe, but not tough. :-)
>
>> If you use `guile-config compile` (and `guile-config link`)
>> in your Makefile it will come out right.
>
> Unless you're also using some other "foo-config" script.....
Fail early and fail hard. Please find a way to fail a test
program, once "configure" has arranged the -I list.
Also:
* guile should provide autoconf macros to do checking,
like for wrong version headers.
* Developers should be clearly warned that -I/usr/local/include
needs to be after all other -I options, due to guile
header naming conflicts.
* I have to vary various interfaces because of the
obsolescence that happens from release to release.
Consistency would be really nice:
There should be a macro that has the value 0x200000 or
some such that includes the revision number, too.
"scm_init_guile_with_version_check" would just ignore
the last 12 bits (or divide by 1000, whatever works...)
I have to if-def code due to the interface migration.
BSD has moved on to 1.6, so I expect they won't be going
to 2.0 any time soon.
Speaking of moving interfaces, since this call:
scm_list_1(SCM_EOL);
yields a value that gets garbage collected and since it is
equivalent to the accidentally removed scm_listofnull,
I am interested in a stable "do it this way" equivalent.
>> > By replacing "scm_listofnull" with "ag_scm_listofnull" and initializing it:
>> > SCM ag_scm_listofnull = scm_list_1 (SCM_EOL);
> In Guile < 1.9.3, you have to scm_gc_protect_object this value
> (info "(guile) Garbage Collection Functions").
and it sounds like scm_gc_protect_object(ag_scm_listofnull) won't
work in 2.0. Would you-all please put scm_listofnull back?
Thank you. Regards, Bruce
P.S. the listofnull piece of my guile interface glue now looks like this:
> #if GUILE_VERSION < 107000
> [.....]
> # define AG_SCM_LISTOFNULL() scm_listofnull
>
> #elif GUILE_VERSION < 108000
> [.....]
> # define AG_SCM_LISTOFNULL() scm_listofnull
>
> #elif GUILE_VERSION < 109000
> [.....]
> # define AG_SCM_LISTOFNULL() scm_listofnull
>
> #elif GUILE_VERSION < 201000
> [.....]
> # define AG_SCM_LISTOFNULL() scm_list_1(SCM_EOL)
>
> # define scm_sizet size_t
>
> #else
> #error unknown GUILE_VERSION
> #endif
and I use AG_SCM_LISTOFNULL() instead of scm_listofnull.
Does this look right?
